Design and Research of Point Absorber Wave Power Converter

2013 ◽

Vol 291-294 ◽

pp. 1949-1953

Author(s):

Yu Feng Tian ◽

Yan Huang

Keyword(s):

Reference Method ◽

Power Converter ◽

Navier Stokes ◽

Wave Power ◽

Governing Equations ◽

Finite Element Software ◽

Region Method ◽

Boundary Method ◽

Physical Model Tests ◽

Pendulum Wave

The interactions between waves and the pendulum wave power converter were simulated, considering Navier-Stokes (N-S) equations as governing equations of the fluid, using the k-ε turbulence model and finite element software ADINA. The setting wave-generating boundary method and viscosity damping region method were developed in the numerical wave tank. Nodal velocities were applied on each layer of the inflow boundary in the setting wave-generating boundary method. The viscosity of the fluid in the damping region was obtained artificially in the viscosity damping region method, and the energy in the fluid was decreased by the viscosity in governing equations. The physical model tests were simulated with the fluid-structure interaction (FSI) numerical model. The numerical results were compared with the experimental data, and then the results were discussed. A reference method is advanced to design the pendulum wave power converter. The method to solve the complex FSI problems is explored.

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FIELD EXPERIMENTS OF A WAVE POWER CONVERTER WITH CAISSON BREAKWATER

Renewable Energy, Technology and the Environment ◽

10.1016/b978-0-08-041268-9.50028-6 ◽

1992 ◽

pp. 2530-2535 ◽

Cited By ~ 1

Author(s):

Hiroaki Nakada ◽

Hideaki Ohneda ◽

Shigeo Takahashi ◽

Masazumi Shikamori ◽

Tadashige Nakazono

Keyword(s):

Field Experiments ◽

Power Converter ◽

Wave Power ◽

Caisson Breakwater

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Performance assessments of the fully submerged sphere and cylinder point absorber wave energy converters

Modern Physics Letters B ◽

10.1142/s0217984919501689 ◽

2019 ◽

Vol 33 (13) ◽

pp. 1950168 ◽

Cited By ~ 2

Author(s):

Qianlong Xu ◽

Ye Li ◽

Yingkai Xia ◽

Weixing Chen ◽

Feng Gao

Keyword(s):

Wave Height ◽

Wave Energy ◽

Interaction Analysis ◽

Wave Power ◽

Viscous Damping ◽

Power Performance ◽

Point Absorber ◽

Wave Energy Converters ◽

Submerged Sphere ◽

Energy Converters

Fully submerged sphere and cylinder point absorber (PA), wave energy converters (WECs) are analyzed numerically based on linearized potential flow theory. A boundary element method (BEM) (a radiation–diffraction panel program for wave-body interactions) is used for the basic wave-structure interaction analysis. In the present numerical model, the viscous damping is modeled by an equivalent linearized damping which extracts the same amount of wave energy over one cycle as the conventional quadratic damping term. The wave power capture width in each case is predicted. Comparisons are also made between the sphere and cylinder PAs which have identical geometrical scales and submerged depths. The results show that: (i) viscous damping has a greater influence on wave power performance of the cylinder PA than that of the sphere PA; (ii) the increasing wave height reduces wave power performance of PAs; (iii) the cylinder PA has a better wave power performance compared to the sphere PA in larger wave height scenarios, which indicates that fully submerged cylinder PA is a preferable prototype of WEC.

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Study on Performance of Pendular Wave Power Converter Attached to Detached Breakwater of Pillar Type

PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN ◽

10.2208/prooe.11.271 ◽

1995 ◽

Vol 11 ◽

pp. 271-275

Author(s):

Kakuya Hasegawa ◽

Hideo Kondo ◽

Hiroshi Umeda ◽

Hitoshi Nishimaki

Keyword(s):

Power Converter ◽

Wave Power

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Design synthesis of oscillating water column wave energy converters: Performance matching

Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy ◽

10.1243/0957650981537375 ◽

1997 ◽

Vol 211 (6) ◽

pp. 489-505 ◽

Cited By ~ 25

Author(s):

R Curran ◽

T P Stewart ◽

T J T Whittaker

Keyword(s):

Water Column ◽

Limited Range ◽

Power Converter ◽

Analytical Models ◽

Wave Power ◽

Oscillating Water Column ◽

Wells Turbine ◽

Design Synthesis ◽

Wave Energy Converters ◽

Pneumatic Power

The matching of a Wells air turbine to an oscillating water column (OWC) is addressed, with particular reference to design synthesis at the Islay prototype wave power converter. The level of damping applied by the turbine must optimize the hydraulic performance of the OWC in order to facilitate efficient conversion from wave power to pneumatic power. Furthermore, a Wells turbine is only able to convert pneumatic power to mechanical power over a limited range of flow coefficients. Therefore, the efficient operational range of the turbine must extend over a sufficient and optimal proportion of the range of flow coefficients generated by the OWC. Suitable analytical models that describe the behaviour of the system are presented and subsequently the wave conditions and conversion performance at the Islay plant are outlined in order to exemplify the design synthesis to be achieved.

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Far-field theory of wave power capture by oscillating systems

Philosophical Transactions of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rsta.2011.0275 ◽

2012 ◽

Vol 370 (1959) ◽

pp. 278-287 ◽

Cited By ~ 10

Author(s):

F. J. M. Farley

Keyword(s):

Field Theory ◽

Power Converter ◽

Wave Power ◽

Far Field ◽

Polar Diagram ◽

Oscillating Systems ◽

Power Capture ◽

The Waves

A new derivation is given of an equation, relating the capture width of a wave power converter to the polar diagram of the waves generated by the device. The pattern of waves in the lee of the device is calculated in detail.

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